John euch and john euch



UNITED. STATES PATENT OFFICE.

JOHN RUOH AND JOHN RUOH, JR, OF PHILADELPHIA, PENNSYLVANIA, ASSIGNOES TOTHEMSELVES AND GEORGE RUOH, OF SAME PLACE.

MOTH-PROOFING HAIR.

SPECIFICATION forming part of Letters Patent No. 359,287, dated March15, 1887. Applicationfiled November 9, 1885; Renewed August 16,1886.Serial No.211,069. (N specimens.l

To all whom it may concern.-

Be it known that we, JOHN RUOH and JOHN RUOH, J r., citizens of theUnited States, and residents of Philadelphia, Pennsylvania, haveinvented an Improvement in Destroying and Preventing the Breeding ofMoths in Hair, Wool, &c., of which the following is a specification.

The object of our invention is to effectually 1o destroy and prevent thebreeding of moths in curled hair, such as is used for upholsteringfurniture; and this object we attain by boiling the mass of hair in asolution of chloride of sodium or other salt, to which is preferably :5added a small quantity of muriatic acid.

We have found that moths and their eggs or grubs which may be in thehair are destroyed by this treatment, and the hairs are provided with apermanent coating or incrus- 2c tation of salt, so that the moths willnot deposit their eggs upon nor will the worms or grubs of the moth-flyattack them. We prefer to make a strong solution of salt-say about threequarts of salt to three gallons of Water-and to this we usually addabout five ounces of muriatic acid, the mass of hair in the rope beingboiled in this solution for about four hours. The hair is then dried, so

as to evaporate the water and leave the salt in the crystalline form,and the hair is then picked out, preparatory to use for upholstering inthe usual Way.

The acid has the effect of preventing the softening of the hair, whichwould otherwise be likely to result from long boiling of the same in thesalt solution. The said acid also counteracts, in a measure, thetendency which the grease upon the hair has to prevent the properincrustation or coatingof the same by the salt.

We claim as our invention- The mode herein described of rendering curledhair Inothproof, said mode consisting in boiling the hair in a solutionof salt and then drying it, so as to evaporate the water and leave thesalt in the crystalline fofin, all

substantially as specified.

In testimony whereof we have signed our names to this specification inthe presence of two subscribing witnesses.

' JOHN RUGH.

JOHN RUGH, JR.

